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authorEric Paris <eparis@redhat.com>2010-07-28 18:18:38 +0400
committerEric Paris <eparis@redhat.com>2010-07-28 18:18:52 +0400
commit75c1be487a690db43da2c1234fcacd84c982803c (patch)
treeb38ce47f157d3b0eff7ac6eb4756a4b390ac35ae /include/linux/fsnotify_backend.h
parent700307a29ad61090dcf1d45f8f4a135f5e9211ae (diff)
downloadlinux-75c1be487a690db43da2c1234fcacd84c982803c.tar.xz
fsnotify: srcu to protect read side of inode and vfsmount locks
Currently reading the inode->i_fsnotify_marks or vfsmount->mnt_fsnotify_marks lists are protected by a spinlock on both the read and the write side. This patch protects the read side of those lists with a new single srcu. Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'include/linux/fsnotify_backend.h')
-rw-r--r--include/linux/fsnotify_backend.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 8e24cdf72928..84159390969f 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -302,6 +302,7 @@ struct fsnotify_mark {
#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x08
#define FSNOTIFY_MARK_FLAG_ALIVE 0x10
unsigned int flags; /* vfsmount or inode mark? */
+ struct list_head destroy_list;
void (*free_mark)(struct fsnotify_mark *mark); /* called on final put+free */
};